Multitubular steam-boiler.



100.785,000. i PATENTBD MAL-14, 1905.

' J.' F. LIEBENTRITT.

MULTITUBULAR STEAM BQILER.

APPLIoATIoN FILED MAY a. 1904.

4 sums-sansa.' -1.

` PAYTBNTBD MAR.14 ,`1`905. n .1.11 IJEBENTRITT.r MULTITUBULAR STEAM BOILBR.

APPLICATION FILED MAY 3, 1904.4 K

4 SHEETS-SHEET '2.

No. 785,009. PATBNTBD MAR. 14,1965.'

J. F. LIEBENTRITT.

MULTITUBULAR STEAM BOILER.

. APPLIoATIoN FILED una. 1904.

sums-EMM s.

Y 'MyW/ZX PATENTBD MAR.14, 1905.

` J. F. LIEBBNI'RITT. v MULTITUBULAR STEAM BOILER.`

` APPLIUATION FILED M AY 3, 1904.

4 SHEETS-SHEET 4.

Nrriuo STATES ratentea March 14, 1905.

PATENT OFFICE.

JOI-IN FREDERICK LIEBENTRITT, OF BANKSTOWN, NEAR. SYDNEY, NEW I SOUTH WALES, AUSTRALIA.

MULTITUYBULAR STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 785,009, dated March 14, 1905. Appiimion flied fray s, 1904. serial No. 206.164.

To (1,7/7/ whom zit may concern,.-

Be it known that I, JOHN FREDERICK LIEB- ENTRITT, pottery and tile manufacturer, a subject ofthe King of Great Britain, residing at Cumberland Pottery, Bankstown, near Sydney, in the State of New South Wales and Commonwealth of Australia, have invented new and useful Improvements in Multitubuspecification.

lar Steam-Boilers, of which the following is a specification.

This invention refers to all multitubular steam-boilers, though it has been specially devised in relation to horizontal boilers of this class and particularly in relation to those known as the locomotive or loco type.

These improvements are concerned in particular combinations with the steam-boilers of peculiar arrangements of flue's or gas-passages, together with devices whereby they are made more accessible for cleaning. By these peculiar arrangements of flues a greater proportion of heat than heretofore is extracted from the gases of combustion and utilized in the generation of steam, thereby insuring greater economy of fuel, while at the same time the prevention of the escape of sparks and ashes is assured; but in order that this invention may be clearly understood reference will now be made to the drawings accompanying and forming part of this complete Figure 1 is a longitudinal vertical sectional elevation of a loco-type steam-boiler with my invention applied, the section being taken substantially on line 1 1 of Fig. 2. Fig. 2 is a longitudinal horizontal sectional plan of the same on the line 2 2 of Fig. 1, the cylindrical o shell or barrel of the boiler being removed, so

as to display the iiues. Figs. 3 and 4 are transverse sectional elevations on the lines 3 3 and 4 4, respectively, in Fig. 1. Fig. 5 is a detail sectional view, and Fig. 6 a detail view in elevation, of the flue ends in the lire-box, showing arrangement of doors for closing the return and forward iiues. Figs. 7, 8, 9, and 10 are similar views, corresponding, respectively, to Figs. 1, 2, 3, and 4, of a modification of the improvements, wherein the fire-box ends of the iiues have one sliding closure-plate instead of a series of doors. Figs. 11 to 16 show further modified constructions wherein the present improvements are applied to stationary multitubular boilers. Fig. 11 is a longitudinal-sectional elevation of sucli multitubular boiler with water-bridge and additional forward and return flues and water-jacket around said flues. Figs. 12 and 13 are crosssectional elevations of same on lines 12 12 and 13 13, respectively, in Fig. 11. Fig. 14 is a longitudinal section of a similar boiler without water-jacket, and Figs. 15'and 16 are sections respectively on the lines 15 15 and 16 16 in Fig. 14.

Referring to Figs. 1 to 10, the multitubular boiler is of the construction well understood of the loco type, with fire-box or combustionchamber 11, the rear walls 11 and 11b, crownplate 12, furnace-door 13, grate 14, tube-plate 15, barrel 16, tubes 17, smoke-box tube-plate 18, smoke-box 19, smoke-box door 20, and funnel 21. To apply these present improvements to this make of boiler, the following alterations and additions or combinations are constructed: The tube-plate 18 is set sufficiently within the barrel 16 to allow of the insertion of the baffie or flue turn-plate 22, and the orifice 23 is cut in the extending part or flange 16 of said barrel 16. Around the barrel is a semicircular shell 24, and the dividing-plates 25 and 25a form iiues arranged in pairs on each side of the lower half of the shell, ou the exterior thereof, as indicated by the reference-numerals 26, 27, 28, and 29, it being observed that the division-plates 25 extend forwardly from the baiiie or iiue plate 22, alternating with the plates l25", which extend rearwardly from the wall l1u of the combustion-chamber, and thus tortuous passages are formed by the pairs of iiues extending longitudinally ofthe tubes 17, segmentally disposed in cross-section with re-` lation to each other and substantially incasing that portion of the shell 16 containing the fire-tubes, the underneath or central iiues 26- communicating through the opening 23 in the iiange 16 with the rear ends of the tubes 17 and the outer iiues 29 of the series communicating at their open rear ends with the open air-as, for instance, by way of the smoke- `tion to and in the boiler 16.

box 19 through the openings`30 in the plate 22. By tortuous fiue or ues is meant that the flues have a plurality of turns or convolutions and extend backwardly and forwardly a number of times, the flue-passages lying ad-v jacent each other, as contradistinguished from a flue having a single foward passage and a single return passage formed by a transversely-disposed longitudinal partition separating` an outer jacket or casing into upper and lower compartments on opposite sides of the lire-tubes. The front or fire-box end of these lues is closed tightly to prevent interference with the draft, and preferably by such closures, as hereinafter described, which will allow of such fines being easily cleaned.

As illustrated in Figs. 1 to 6, each Hue or pair of fiues of the series 26 27 and 28 29 has a door 31 of channel-iron with fire-clay lining 316. Each door has hinges 32 and a suitable fastening 33, which may take the form of a revolving' button or the like, as herein shown in the drawings.

As illustrated in Figs. 7 to 10, one closureplate 34 covers all the liue ends, and this is moved or slid upwardly when required to expose the interior of the fines. The plate 34 has extended ends or horns 35, which pass upwardly through an orifice or space 36, constructed by plating from the crown to the shell,(indicated by plate 12,)connectingcrown 12 with shell portion 16h, and by plating 11b', connecting the tube-plate 15 with the inner wall of the shell 16 for closing the upper end of the latter. Detachable devices are afxed when required to the ends of these horns 35 for lifting and lowering the closure-plate 34, though these may be permanent, if desired. These devices consist of a cross-rod 38 to pass through slots or orices 37 in the horns and through a hole or slot in a screw 39, whose nut 40 operatively engages above a supporting frame or trestle 42 and is preferably provided with a handle 41 for revolving it; but obviously a handle might be carried by the screw and the nut held stationary.

In the arrangements shown in Figs. 11 to 16, though the back tubevplate 18 is set within the shell, as beforedescribed, there is no smoke-box; but there is a semicircular passage or iiue 43, which runs around the top half of the boiler at the back end, into which the flue 29 enters at right angles. On top of this iiue 43 rests the chimney 21, so that the heated gases after passing along flues 26, 27, 28, and 29 pass along passage 43 and thence out through said chimney. AIn Figs. 11, 12, and 13 a water-jacket .44 surrounds the large liues, and the water therein has free circula- In this construction the combustion-chamber l1 is of a cylindrical shape and is provided with a hollow bridge-baliie 45, the peripheral wall of the combustion-chamber and the interior of the hollow bridge or baiie 45 being in conl tact with the water in the boiler. A-cast-iron plate 46 covers the front end of the fire-box 11 and the fines 26, 27, 28, and 29, as shown, through which are orifices 13a and 47 with suitably-fixed doors for closing same. The construction shown in Figs. 14, 15, and 16 is in all respects similar to that of Figs. 11, 12, and 13, with the exception that the waterjacket 44 is dispensed with. The passage of the heated gases in both these modifications is identical, said gases leaving the grate 14, passing over water-bridge 45, through tubes 17 ,out th rough passage 23 into i'lues 26, thence by lues k27, 28, 29, and 43 to chimney 21. The closures of the liues may be doors 47, as shown, with suitable fastenings easily removable, that said iues may be cleaned, or they may be closures such as those described with reference to Figs. 1 to 10.

In applying these present improvements to vertical tubular boilers the constructions would be similar to those last described, save that the passages 43 would take the form of a converging hood to the base of the chimney and other suitable arrangements take place without departing from the nature of this invention, as would readily suggest themselves to any one skilled in the art to which this invention appertains.

What I claim is- 1. In steam-boilers the combination with the water-shell and fire-box, of a plurality of lire-tubes extending' through said shell and communicating at one end with said lire-box, and a tortuous flue, located adjacent said tubes on the exterior of said shell, communicating at one end with said tubes and at the other end with the open air.

2. In steam-boilers the combination with the water-shell and lire-box, of a plurality of fire-tubes extending through said shell and communicating at one end with said fire-box, and a tortuous flue located adjacent said tubes andl extending longitudinally thereofl on the exterior of said shell, communicating at one end with said tubes and at the other end with the open air.

3. In steam-boilers the combination with the'water-shell and lire-box, of a plurality of fire-tubes extending through said shell and communicating at one end with said fire-box, and a plurality of tortuous lues located adjacent said tubes on thel exterior of said shell,

IOO

communicating at one of their ends with said f tubes and at their other ends with the open air.

4. In steam-boilers, the combination with the water-shell and lire-box, of a plurality of fire-tubes extending through said shell and communicating at one end with said fire-box, and a plurality of tortuous iiues, located .adjacent said tubes and extending longitudinally thereofl on the exterior of said shell, communicating at one of their ends withsaid tubes and at their other ends lwith the open air.

5. In steam-boilers the combination with the water-shell and fire-box, of a plurality of l fire-tubes extending through said shell and communicating at one end with said fire-box,

- and a plurality of tortuous iues extending longitudinally of said tubes, forming a plurality of longitudinal passages segmentally disposed in cross-section, and communicating at one of their ends with said tubes and at their other ends with the open air. l

6. In steam-boilers the combination with 'the water-shell and fire-box, of a plurality of lire-tubes extending through said shell and communicating at one lend with said fire-box, and a plurality7 of tortuous flues extending longitudinally of said tubes, on the exterior ofv said shell, forming a plurality of longitudinal passages segmentally disposed in cross-section, and communicating at one of their ends with said tubes and at their other ends with the open air.

7. In steam-boilers the combination with the water-shell and fire-box, of a plurality of lire-tubes extending through said shell and communicating at one end with said fire-box,

- communicating at one end with said {ire-box,

and at their other ends with a chamber formed at the rear end of said shell, and a tortuous flue located adjacent said tubes and extending longitudinally thereof on the exterior of said shell, communicating at oney end with said chamber and at the other end with the open air.

-9. In steam-boilers the combination withY the water-shell and fire-box, of a plurality of fire-tubes extending through said shell and communicating at one end with said fire-box, and at their other ends with' a chamber formed at the rear end of said shell, and a plurality of tortuous iues located adjacent said tubes on the exterior of said shell, communicating at one of their ends with said chamber and at their other ends with the open air.

10. In steam-boilers the combination with the water-shellvand fire-box, of a plurality of lire-tubes extending through said shell and communicating at one end with said iire-box, and at their other ends with a chamber formed at the rear end of said shell, and a plurality of tortuous lines, located adjacent said tubes and extending lQngitudinally thereofl on the exterior of said shell, communicating at one of their ends with said chamber and at their other ends with the open air.

l1. In steam-boilers the combination with the water-shell and lire-box, of a plurality of fire-tubes extending through said shell and communicating at oneend with said fire-box,

and at their other ends with a chamber formed at the rear end of said shell, and a plurality of tortuous flues extending longitudinally of said tubes, on the exterior of said shell, forming a plurality of longitudinal passages segmentally disposed in cross-section, and communicating at one of their .ends with said chamber and at their other ends with the open air.

12. In steam-boilers the combination with the water-shell and dre-box, of forward and rear tube-plates, said rear tube-plate being set within said shell and forming therewith an annular rim, a baflie-plate extending transversely of said rim spaced away from said rear tube-plate and forming a chamber therewith, a plurality of tubes mounted in said tube-plates, communicating at their respective ends with said [ire-box and said chamber, and a tortuous Hue located adjacent said tube on the exterior of said shell, communicating at one end with said chamber and at the other end with the open air.

13. In steam-boilers, the combination with the water-shell and fire-box, of `forward and rear tube-plates, said rear tube-plate being set within said shell and forming therewith an annular rim, a bathe-plate extending transversely of said rim spaced away from said rear tube-plate and forming achamber therewith, a plurality of tubes mounted in said tube-plates, communicating' at their respective ends with said lire-box and said chamber, and a tortuous iiue located adjacent said tubes and extending longitudinally thereof on the exterior of said shell, communicating at one end with said chamber and at the other end with the open air.

14. In steam-boilers, the combination with the water-shell and lire-box, of forward and rear tube-plates, said rear tube-plate being set within said shell and forming therewith an annular rim, a baffle-plate extending transversely of said rim spaced away from said rear tube-plate and forminga chamber therewith, a' plurality of tubes mounted in said tube-plates,communicating at their respective ends with said {ire-box and said chamber, anda plurality of tortuous flues extending longitudinally of said tubes on the exterior of said shell forming a plurality of longitudinal passages segmentally disposed in cross-section and communicating at one of their ends with said chamber and at their other ends with the open air.

l5. In steam-boilers, the combination with the water-shell and fire-box, of forward and rear tube-plates, said rear tube-plate comprising the head of said shell and being set within same for forming therewith an annular rim, a baiiie-plate extending transversely of the lower portion of said rim and projecting beyond its peripheral surface, the upper end of said baffle plate being provided with a flanged portion secured to said rear tube-plate IOO and forminga chamber with said annular rim land tube-plate, a plurality of tubes mounted in said tube-plates, communicating at their respective ends with said {ire-box and said chamber, and a tortuous flue extending longitudinally of said tubes, communicating at one end with an opening in said chamber and at itls other end with an opening in said bafflep ate.

16. In steam-boilers, the combination with,

lof said iues being opposed to said fire-box and provided with apertures adapted to open therein, and closures for said apertures.

17. In steam-boilers, the combination with the water-shell and [ire-box, of a plurality of ire-tubes extending through said shell and communicating at one end with said fire-box, a tortuous iiue communicating at one end with substantially all of said tubes, and at its other end with the open air, forming a plurality of longitudinal Iiuepassages segmentally disposed in cross-section and having apertures in the convolutions of their forward ends adapted to communicate with said fire-box, and a closure for said apertures comprising a semicylindrical door.

18. In steam-boilers, the combination with the water-shell and tire-box, of a plurality of fire-tubes extending through said shell and communicating at one end with said lire-box, atortuous flue communicating atone end with substantially all of said tubes, and at its other end with the open air, forming a plurality of longitudinal flue-passages segmentally disposed in cross-section and having apertures in the convolutions of their forward ends adapted to communicate with said {ire-box, and a closure for said apertures comprisingl a substantially semicylindrical sliding door and means for operating same.

19. In steam-boilers, the combination .with the Water-shell and fire-box` of Jforward and rear tube-plates, said rear tubeplate being set Within said shell and forming therewith an annular rim, a baffle-plate disposed transversely of said rim, projecting beyond the peripheral surface of said shell and forminga chamber with said rear tube-plate, a plurality of tubes mounted in said plates, communicating at their respective ends with said lire-box and said chamber, a pair of tortuous flues extending longitudinally on the exterior of said shell and communicating at one of their ends With said chamber and at the other of their ends With the open air, the said fines being' formed by a spaced substantially semicylindrical plate connecting said baffle-plate with the rear wall of said lire-box and provided With the alternating division-plates extending respectively from said baffle-plate and rear wall of said fire-box.

20. In steam-boilers, the combination with the water-shell and fire-box, of a plurality of fire-tubes extending through said shelll and communicating at one end with said lire-box, a plurality of tortuous fiues extending longitudinally of said tubes, on the exterior of said shell, forming a plurality of longitudinal passages `segmentally disposed in cross-section and communicating at one of their ends with said chamber and at their other ends with the open air, and a water-chamber surrounding said tlues and communicating with the interior of the boiler or shell.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

- JOHN FREDERICK IiTEBllN'lltl'lT.

Witnesses:

PERCY NEWELL, M. J. CANDRICK. 

